Engine case



FIG. 1 is a perspective view of an engine case showing our new design;

FIG. 2 is a left side elevation view thereof, the right side view is identical to the left side view and is therefore not shown separately;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a engine case, as shown and described. 